Hold-open automatic lock sliders



Feb. 25, 1964 L. H. MORIN 3,121,930

HOLD-OPEN AUTOMATIC LOCK SLIDERS Filed Jan. 31, 1962 rim/11111111142 INVENTOR. 1.00/5 H Mom/v BY Q/MMZW ATTORNEY United States Patent 3,121,930 IESLD-OPEN AUTOMATIC LOCK SLIBERS Louis H. Morin, Bronx, NX. (125 Beechwood Ave, New Rochelle, N.Y.) Filed Jan. 31, 1962, Ser. No. 170,096 8 Claims. (Cl. 24-20514) This invention relates to sliders for use in conjunction with separa ble fastener stringers, particularly wherein such stringers are of the type in which the scoops are disposed solely on one surface of the stringer tapes. More particularly, the invention deals with a slider structure of the character defined employing a bell crank-type of lever having means at one end portion thereof engaged by the pull of the slider for moving the lever into position disengaging the lock element from the scoops and automatically retaining the slider in this position by virtue of the hold-open characteristics of the slider structure.

Still more particularly, the invention deals with a slider structure, wherein the rivets retaining a plate of the slider are recessed in alinernent with the outer exposed surface of the plate in reducing overall thickness of the slider body.

The novel features of the invention will be best understood from the following description, when taken together with the accompanying drawing, in which certain embodiments of the invention are disclosed and, in which, the separate parts are designated by suitable reference characters in each of the views and, in which:

FIG. 1 is a plan view of a slider made according to my invention, with parts. of the construction broken away.

FIG. 2 is a section, generally on the line 2-2 of FIG. 1, with parts of the construction shown in elevation and part broken away and diagrammatically illustrating two scoops of a stringer, with the lock element of the slider in operative position.

FIG. 3 is a view, generally similar to FIG. 2, showing only a part of the construction and illustrating the lock element in open position and showing the bell crank lever and pull in hold-open position; and

FIG. 4 is a rear plan view of the slider, as seen in FIG. 2, showing only part of the construction and with part of the construction broken away.

In illustrating one adaptation and use of my invention, I have shown a slider, comprising a top wall 16 and a bottom wall 11, these walls being generally of the peripheral contour noted in FIGS. 1 and 4 of the drawing, the wall 11 being longer than the wall 10. These walls are joined at the upper wide end portion of the slider in a connecting weh 12, as with other devices of this type and kind, the web dividing the wide end portion of the slider into two channels which unite in the single channel 13 at the contracted end of the slider.

The wall has raised platforms 14 and 15, to which an elongated plate 16 is secured by rivets 17 and 18 integral with the platforms 14 and 15, the heads 17, 18 of the rivets being countersunk in correspondingly formed apertures in the plate 16, SO that the heads become flush with the outer surface of the plate 16, as clearly illus trated in FIG. 2 of the drawing.

The platforms 14 and are spaced by an opening 19, in which the pivot end or crossbar 20 of a conventional pull 21 operates, the pull being apertured, as. seen at 22, to clear the plate 16 and the platforms 14 and 15 in operation of the pull in movement of the slider longitudinally of the stringers, as with other devices of this type and kind. The wall 10 has, in alinement with the aperture 19, an aperture 23 which open into the channel of the slider body, as clearly illustrated in FIG. 2 of the drawing.

The wall 11 has, at the wide end portion of the slider p CC body, two integral rivets 24 for securing the wide end 25 of a spring arm 26 on said wall, the arm having, at its free end, offset scoop engaging means or lock element 27 operating in an aperture 28 in the wall 11 to extend into the channel 13 of the slider body to operatively engage at least one of the scoops 29 of a stringer 30, the scoops and stringer being diagrammatically illustrated in FIG. 2 of the drawing. In said figure, it will appear that the arm 26 has a rounded portion 31 extending over the pivot portion 32 of a bell crank lever 33, the lever operating in an aperture 34 in the wall 11 and also operating in the aperture 23 of the wall 10, including the aperture 19 between the two platforms 14 and 15. The wall 11 is recessed, as indicated at 11, for housing the arm 26 when in its normal operative position, as indicated in FIG. 2 of the drawing.

Considering FIG. 4 of the drawing, it will appear that the pivot portion 32 of the lever 33 comprises laterally extending portions 32', which operate in rounded bearings 35, one of these bearings being partially shown, in section, in FIG. 2. Adjacent the pivot 32, the lever has an extending arm 36 having a rounded end 37 which operates upon the spring arm 26 in movement of said arm into the position diagrammatically illustrated in FIG. 3 to move the lock element 27 out of the channel 13 of the slider body.

The lever 33 has a central portion which is adapted to bear upon the inner end of the web 12, as seen at 38 in FIG. 2, when the lever 33 is in the position shown in said figure. The other end portion of the lever 33 has an offset arm 39 including, on one surface thereof, a cam portion 40 and an undercut or recessed wall portion 41, the latter terminating at its lower end in a projecting rounded lug 42 which forms a stop, checking downward movement of the pivot 29 of the pull 21, as is clearly illustrated in FIG. 3 of the drawing. With the pivot 20 in the position shown in FIG. 3, the pivot is in engagement with the recessed wall portion 41, which serves to retain the lever 33, as well as the spring arm 26, in what I term the hold-open position. With the slider in this position, it will be apparent that the stringers can be freely separated by lateral pull on the stringers or the supports to which the stringer tapes are attached. This will provide what might be termed a free and quick separation of the stringers without the necessity of actuating the pull 21 to accomplish this end result. However, when the pull is moved into its normal position, as seen in FIG. 2 of the drawing, the lever will be :moved into the position of FIG. 2 by the spring arm and the slider will be in the locked position, with the lock element 27 extending into the channel of the slider to operatively engage scoops of the stringers.

Considering FIG. 1 of the drawing, it will appear that the lug 42 constitutes part of an enlarged Portion 43, the enlargement consisting of laterally extending sides, as noted at 44 in FIG. 1 of the drawing, and the recessed wall portion 41 extends onto 43 and 44, as indicated at 41', thus extending this recessed wall portion throughout the major portion of the length of the pivot 20, as will clearly appear from a consideration of the length of this pivot and the extensions 44 in FIG. 1 of the drawing. In this connection, it will be understood that the aperture 23 is of sufficient width to receive the lateral extensions 44 of the enlargement 43.

The wall 11 has the usual side flanges 45, one of which is indicated in FIG. 2, in defining the channel 13, and these flanges are illustrated in dotted lines in FIG. 1 of the drawing.

With the parts in the position shown in FIG. 3, in other words, the hold-open position of the slider, it will be apparent that the spring arm 26 actuates the lever 33 so as to tensionally move the recessed wall portion 41 into engagement with the pivot 20 of the pull. However, when the pivot of the pull is moved beyond the recessed wall portion 41, the spring arm will be flexed and the spring tension of the spring arm 26 will return the pull to the position substantially as illustrated in FIG. 1 of the drawing.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A slider of the character described comprising a body having spaced walls joined at one end in a connecting web, one wall having flanged sides defining the channel of the slider body, a spring arm arranged upon one of said walls and including scoop engaging means extending through an aperture in said wall into the channel of the slider body, a lever pivotally mounted in the slider body adjacent to said spring arm and arranged at ,the forward portion of said web, a pull movably supported on the other wall of the slider body, said pull having a pivot portion operatively engaging an end portion of said lever, said lever having an oifset arm adjacent the pivot of the lever and extending therefrom substantially parallel to said spring arm, said offset arm operatively engaging the spring arm in moving said scoop engaging means into inoperative position, and said first named end of the lever including means engaged by the pivot of said pull for moving the lever into position withdrawing the lock element from the channel of the slider body and retaining the lever and element in holdopen position.

2. A slider as defined in claim 1, wherein said last named means comprises a cam surface and recessed wall portion on said lever engaged by the pivot to the pull.

3. A slider as defined in claim 2, wherein said first named end portion of the lever includes laterally extending side portions.

4. A slider as defined in claim 3, wherein said laterally extending side portions include part of said recessed wall portion.

5. A slider as defined in claim 4, wherein said spring arm includes a rounded portion overlying the pivot of said lever.

6. A slider as defined in claim 5, wherein the pivot of said lever comprises laterally extending portions operating in hearings in said first named wall of the slider.

7. A slider as defined in claim 1, wherein the second named wall of the slider body includes raised platforms, a plate arranged upon and joining said platforms, rivet means securing the plate to said platforms, and said rivet means being flush with the outer surface of said plate.

8. A slider as defined in claim 7, wherein the second named wall of the slider includes apertures between said raised platforms and registering with said platforms in which said end of the lever operates, and said plate retaining the pivot of the pull against displacement from the slider body.

References Cited in the file of this patent UNITED STATES PATENTS 2,178,948 Brozek Nov. 7, 1939 2,313,579 Puc Mar. 9, 1943 2,811,764 Morin NOV. 5, 1957 FOREIGN PATENTS 831,423 France Sept. 2, 1938 

1. A SLIDER OF THE CHARACTER DESCRIBED COMPRISING A BODY HAVING SPACED WALLS JOINED AT ONE END IN A CONNECTING WEB, ONE WALL HAVING FLANGED SIDES DEFINING THE CHANNEL OF THE SLIDER BODY, A SPRING ARM ARRANGED UPON ONE OF SAID WALLS AND INCLUDING SCOOP ENGAGING MEANS EXTENDING THROUGH AN APERTURE IN SAID WALL INTO THE CHANNEL OF THE SLIDER BODY, A LEVER PIVOTALLY MOUNTED IN THE SLIDER BODY ADJACENT TO SAID SPRING ARM AND ARRANGED AT THE FORWARD PORTION OF SAID WEB, A PULL MOVABLY SUPPORTED ON THE OTHER WALL OF THE SLIDER BODY, SAID PULL HAVING A PIVOT PORTION OPERATIVELY ENGAGING AN END PORTION OF SAID LEVER, SAID LEVER HAVING AN OFFSET ARM ADJACENT THE PIVOT OF THE LEVER AND EXTENDING THEREFROM SUBSTANTIALLY PARALLEL TO SAID SPRING ARM, SAID OFFSET ARM OPERATIVELY ENGAGING THE SPRING ARM IN MOVING SAID SCOOP ENGAGING MEANS INTO INOPERATIVE POSITION, AND SAID FIRST NAMED END OF THE LEVER INCLUDING MEANS ENGAGED BY THE PIVOT OF SAID PULL FOR MOVING THE LEVER INTO POSITION WITHDRAWING THE LOCK ELEMENT FROM THE CHANNEL OF THE SLIDER BODY AND RETAINING THE LEVER AND ELEMENT IN HOLDOPEN POSITION. 